Left 4 Dead 2 is a great zombie shooting game. You play as one of four survivors and try to get to a series of four safe houses per story mode. The whole game is zombies so there is no lack of content. The multiplayer is great. there is vs. mode which allows you to play as either the zombies (infected) or the survivors, and play against another person (on or offline) who is the other option. There is also co-op which allows you and a friend to go through the campaigns as the survivors. This game is a great game and is worth buying.